Machine for manufacturing twist-drills and other articles.



E. J. LEES. MACHINE FOR MANUFACTURING TWIST DRILLS AND OTHEHARTICLES.

APPLIICATIONIF'ILED APR- ll. 1914. 1,254,81 6. Patented Jan. 29, 191

I5 SHEETS-SHEET I.

WITNESSES:

. v INVENTOR j BY I i M M ATIQRNEY E. J. LEES.

& E L Pu On A Ru E H 0 D N A S l. L R D T S W I G N R u T C A F U N A M R 0 F E N H c A M APPLICATION HLED APR. I1. 1914-- Patented Jan. 29, 1918;

I 5 SHEETS-SHEET 2.

INVENTOR [EA 55f J 4555.

I? 41 [7/ iv-ML ATTORNE Y INVENTOR CEA/ESF'J L655;

ATTORNEY E. J. LEES; MACHINE FOR MANUFACTURING TWIST DRILLS AND OTHER ARTICLES.

ABPLICATION FILED APR. Tl. |9|4- 1,254,816. Patented Jan. 29, 1918.

i5 SHEETS-SHEET 4- TNVENTOR EDP/V557" Jlffis.

ATTORNEY E. J. LEES. MACHINE FOR MANUFACTURING TWIST onus AND 0T HER ARTICLES.

APPLICATION FILED APR. II, 1914- V I Patented J an. 29, 1918.

I5 SHEETS-SHEET 5- NMN iN'YENTOH f/P/VEST JTLZFES wmwessss.

BY I I 7'- V W ATTORNEY imam E. J. LEES. MACHINE FOR MANUFACTUR! 3 E L C T Du A R CL H 0 D N A S ..L IL R D T S W T G N APPLICATION FILED APR. ll. 19H.

Patented Jan. 29, 1918.

INVENTOR E E T J. 4555,

ATTORNEY l5 SHEETS-SHEET L5- MACHINE FOR MANUFACTURI WiTNESSES APPLICATION FILED APR-11.19M-

WITNESSES Z/fiz QM Vdt;

E. 1. LEES. MACHINE FOR MANUFACTURING TWIST DRILLS AND OTHER ARTICLESr Patnted Jan. 29,1912;

APPLICATION FILED APR: H. 1914. 1,254,816.

HEETS-SHEET 9- "Iiizii'II'IinI lllllllllllllllllllllll WiTNESSES:

INVENTOR P/vfsr 4555 a l-1522b 94 a;

may

a 7 wit-1.4L ATTORNEY E- 1-. LEES. MACHINE ron muumcwnms TWIST DRILLS AND omen ARTICLES. 1,254,816.

APPLICATION HLEDQAPR. n. 1914.

' Patented Jan. 29, 1918.

VII? w w wk QWN m Inn INVENTOR [EN/55 7JL/F 5.

BY W E. J. LEES. MACHINE FOR MANUFACTURING TWIST DRILLS AND OTHER ARTICLES.

m. m2 M 5' a J M ow P APPLICATION FILED APR. I, 1914.

55555 I I I I;

wwwessgs;

INVENTOR ERNEST [4556 42/ wa a.

E. J. LEfS. MACHHVE FOR MANUFACTURING TWIST DRILLS AND OTHER ARTICLES Patented Jan. 29, 1918.

APPLICATION FILED AFR. I. 1914.

MN n 15 SHEETS-SHEET l3.

Fig. 29. M

WITNESSES: v mvsm'on EE/YESf' J. .4555

I5 SH.EETS5HEET H ATTORNEY INVENTOR f/e/vfsz-J L555 Patented J an. 29, 1918.

E. 1'. LEES. MACHINE FOR MANUFACTURING TWIST DRILLS AND OTHER ARTICLES. 1,254,816.

APPLICATION FILED APE. H, ISM.

E. J. LEES.

MACHINE FOR MANUFACTURING TWIST DRILLS AND OTHER ARTICLES.

APPLICATION FILED APR. ll. I914. 1,254,816. Patenm Jan. 29, 1918.

warmers-shin is.

mm mw INVENTOR KE/YELDTJ'ZIEJ,

' 5 BY W 7, ff ATTORNEY imun nfncture from sums mans, F CLEVE AND,

son mnno mcrvnmd mwIs'r-nmms' m: crass.

i T '0 ell whom it may concern,

man other like ziltii'les. is herein describedmainly as an apparatus for the specific pill? use of making twist drills.

'he invention involves improvements in the construction and operation of a mesubject of, ,illlklblank carrier or. turret. for

chine ofi this character whiclris made the illustrated m, a patent- ,Ilill lttll 'to sl -hrn ni l). Wilt, Jr., on Decemher 6, 1910, NO; 9785097.

In then-aid pzit'cnt eil nnchine the several operations nf'cutting-tln' stock nml fashioning and finishing the drills are performed successively, tl-lereli'i-ii g n Flnrnlity of work 4 Shll'lillllaill' uzlueh the wor -.-":st nges 3s porlornn-i-l snnnltenieously. 30.

in its different In other words, there is provided a tool holtler or .hciu-l having n plur'nlit of tools, and a holding the severed swim r stoek. nsspcnntnrl with the ,s:nne. nml provided with chucks or devwes drilled on at the-tool: stations. 'lhe'blenks,

for holding the blanks in position'To be'op- 'nfiiol: being turned. :inll sevi-reil from..tlie

fliers from others in tl e prior expelled unrllml fi'oin st'ufsion'm st'ntiou where the \VOlk'llPOll tliemls'pei'formecl. I

In lZ'lJlS niny ns ally the chin-ks of the blank ,ezirrir' nl'ef'prorided with'blnnks, a different stage. in the work is being simultaneously carried on at each tool station, am]. than, b the rotation ofthe; hlnnk carrier the n-rc by the fact.

' that tliere is a correlation semen the work speoifioaliou at Letters Patent.

iuze received and hehlby the checks rotation of the blank cnrrier are moreover, dif- ATENT onnion.

omo, ASSIGNOB. Bro-A. n. wmr, an. onb'n'mom MICHIGAN. i

. performed at. one stiltionand that performeclat the next :suceeecling station.

Tlmtis, in the making'of such artie es' as.

twist (hills, i-enmers and the like, if'tlre op erntlon Hl\'Ol\'S the dressing or shnpin of the blank and the cutting of-. tl1e.same 12 {he her of, stock. and the-second operation involves the milhng offizho grooves-the .lnb; 1 ter operation will be oneweqluringf unconfisiderable length of: time as colnpnregl with the former. Butto correlate the two, the,

milling of the grooves is divided 11p into a plurnhty of stages 01' O1)C.lR 't-lOllS-;hl18j;f

Patented Jan. 291- 191 I 'n'pplication.filedl;l prtl11.1914! 8eria1No.831,122.

to cut the grooves to a pre cleterminetl depth,

and thenthe work is t-t'llfiu'fllllfita on to the next stiition where 'thegrooves are f0 be -cut slightly deeper, it is essentinlv that thetoo'ls at such suceecding'station will t'mrverse in the same time precisely the same path, and soon for the succeeding stations wherel-lie workis performed upon the same path.

The general ohf'eci' of the inachnici. there.v fore, is to out hlnnks from n continuous lamof stock and. perform the var-ions cnts ancl oueratious thereon at succeeding tool star tions, and finally finished. product, and of this application, on said machine, the nature and mrpose of which will be. desoi-ibed in deta' by reference to the accompanying drawings.

The objects of my invention may be ac complished by the use of the apparatus illustrnted in these drawings as the best embodiment; of'the-sunie of which I am now a'wure;

Figure 1 is a side elevation of-the. complete machine.

Fig. 2 is a top plan view of'the same.

F1 g. 3 is a section-s1 elevation of the brinciipnl part of Fig. 11;

the invention, subject eject from the machine the consists in improvemex'lts utionpf the some.

tion of the mechanism .for' operation of the chucks for the blanks.

' Fig. .7 is a detail on' an enlarged scale of a. means for shifting the forward and reyerse gears,

Fig. 8 "s an enlarged detail, in sectional elevation, of the means for releasing, ro-

toting. and indexing the blank carrier.

Fig. 9 is a similar view of the same purts; with the blank carrier rotating shaft in a.

diflercnt position.

Figs. 10, 11,12 and 13 are views partly in elevation and partly in section illustrating the chucking or gripping mechanism for the blanks.

Fig. 14 is an enlarged illustrative diagram of the apparatus drawn to exhibit the rela tion of certain of the parts rather than their specific construction. 7

Figs. 15, 16 and-17 are views partly in elevation and partly in section of the devices for gripping and feeding the stock.

Fig. 18. is an end view o f'the machine looking fromthex ight in Fig. 1.,

Fig. 19 is e'seetidual view on the line X X of Fig.3. V

Fig. 20 is u centrallongitudinal section of the tool holder. or head.

Fig. 21 is a. section on the line Y Y of Fig. 3. parts being broken away, and others shown in section for the purpose of more clearlyillnslratin them.

Fig. 22' is u bro on section on the line Z Z ufFJg; 3. 4

Fig. 23 is -a section throu h the shaft showni in elevation the tool elders.

Fig. ..-'.l is a. sectional detail of a portion of theblank carrier. p

"Figs. 2.1.26, 27 and 28 are devices for holding:al 1d ..o[mruting the blank cntting'tool.

Fig. 29 is an enlarged detail in sectional .elcrat-ionof the means'for. locking und rcleasing the indexing mechanism.

. Big. 30- is enenlurgcd' detail-view incle- Fig. 3-1 is a sectional view ilh'xslruting the oiling. devices for the clearance cutters.

lltig. 32 is a. sectional view illustrutiugonc of. the oilin devices for the milling cutters which out he grooves in the blanks. Fig. 33 is 41 section on the line vu-1u,

Fi l4 l igxfl'l is on end elevation of u portion of some of the ports shown in Fig. 33.

Fig. 35 1s a plan new of the purls shown adjusting mcchum'oni for, the clearance cuttors.

Fig. 39 is a. section on the line p 'p,

Fig. 4.0.

*ig. 40 is a plan view illustrating the mounting of the clearance cutters.

Fig. $1 shows inside elevation and cud View in drill blank as cut.

The machine in gcnerul comprises u frzune 1 upon which are mounted u srutiomlry (oo'l holder or head 2, a reciprocating and rotate ble blank carrier or turret P1. and the other ports designed to more the latter to and fro 'with respect to the tools. to rotate the sumo by successive steps, to feed the blanks ulnl to perform the otherfunctions inridcnl lo lhu operation of the machine.

As n matter of convc-nicncr in illustrating. the construction of the device will he 4h scribed in the order of lllr UllLl'iltlUHs pmformcd, us for as possible. lx-giuuiug will! the introduction of the l'llllllliS.

Inthe forward part of The machine urn pivoted dogs 4, Fig. 17, suitably suppori ml rm us to enga e the stock 5 between them u m] (lirect it in t ieline of feed. Thctulm e. Whirl! operntes'the chuck or collet 9, by which tlu stock is clamped and held during the return movement of the dogs 4, surrounds the stock within the tube 17.

The chuck or collct 9 is actuated by a slidlug collar 7 on the tube 1? through lhc HIU- (lluln of the hell crank levers 8 pivotully mounted in the shell 8. suitably secured to the tube 6, and an arm 1.35 ut one end bi Furcutell to engage the collar '7. which slides lwtween fixed nCljUSinblr slops 15w" um] 18 on the reciprocating bur 18. The lovers 8 are actuated by cams 7 on the collar 7, and operate to shift the tube 6 longitudinally in relation to the nose 10, the lufter being provirhul with u tapering shoulder 11', on-

ill)

pia otully mounted onihe lover- 155. is

u spring interposed between these levers. The lever 155 is pivoted at 155 to a support m-hlruckct' 2' fustened to the hen-(1.2. This brucket curries u pmjection 155 with which the-"end 155" of the lever 155 is udapliedto engage to hold the lever 155 unrl the clutch mechanism connected therewith in position at 62' Fig. 3, to shaft 37 and which rotates the latter.

Secured to shaft 48 is a worin 68 which drives Worm gear 64 which is attached to clutch element 65, which is loose on shaft. 66.

On the shaft 66 is secured a cam wheel 67 operating spring actuated plunger 68 connected with rocking lever 69 which is pivotally connected to clutch 70 splined to siindle 49. On shaft 6 is also an adjustable collar 71 which during the forward movement of shaft 66 engages with bifurcated arm 72 attached to red 73. The rear end of this latter engages the walls of a notch 87 in plunger 68 to keep the plunger retracted. for a predetermined period of time.

The blank carrier 3 carries a gear wheel 74, which engages a pinion 75 on the shaft 66, the gears in the machine illustrated be ing proportioned so that the blank carrier will be. caused to revolve one-sixth of a (:(HIIPlOtQ. revolution for each revolution of the shaft 66. In order to effect sinrultaneous longitudinal movement in either direction of the blank carrier and shaft 66. the pinion 75 has flanges which embrace the sides of gear wheel 74. The pinion 63 re volves conlinuousb, being driven by the shaft or spindle 48 which receives its power directly from the shaft 42 through the worm 44 and the gear 46. The shaft 66 is revolved intermittently, through the action of the clutch 65. including the element 65 carried by the worm wheel 6-1 and the element 65 splined to the shaft 66. This clutch may be of any suitable construction, and its elements should be .so eorrelated as to engage and effect the rotation of the shaft 66 when the blank carrier is at the end of its rearward movement.

The shaft 66 is normally prevented from rotating by means of a stop 7 7, Fig. 30, engaging a notched wheel 78 fast to said shaft '66. .A slide. 79, Fig. 14, mounted on the frame 1 is 'reciprocated through the medium Anextension of this rocking arm member is provided with a spring actuated pivoted dog 81, en aging the forward beveled end, of a shoul ered spring plunger 82 contained withinthe slide 7 9, lig. 29.

On the forward movement of the blank carrier and'sliaft 66, the s .)ring 83 surroundment of the forward end. of the plunger with adjustable stop 8%, on frann-l. Fig. 9, and'cocked or retained by means of a )1\'- 1,254,& 16

"zontally which is adapted to be swung into the path of travel of the plunger section 89 to retain the plunger retracted.

On the backward or return movement of this slide 79 when near the extreme limit of its travel, the arm 85 of pawl 85 encounters a fixed stop 86, Fig. 29, by means of which the pawl arm 85 is swung out of the path of and released from shoulder 82' of the plunger, which latter, under the action of the spring 83, pushes back, and the beveled head 82 of the plunger rides over the spring dog 81. This rocks the arm 80 about the axis of the pivot 80, frees the stop 77 from the shaft 66, and, the elements of the clutch 65, Fig. 14, being now ineiigagcment, the shaft 66 is given a complete revolution with a resultant one-sixth rotation of the blank carrier 3, whereupon the stop77. Fig. 30; again enters the notch in the wheel 78, engages the walls thereof and prevents further rotation of the shaft 66 for a predetermined period. The clutch element 65, Fig. 14, isprovided with friction slippage and drive means. so as to permit necessary slippage in the clutch when the elements 65' and 65* engage during the rearward movement with the notched wheel 78- and beforethe shaft 66 has moved a'suflieient distance forward to effect disengagement of the clutch elements.

(By rotation of the shaft 66, the cam wheel 67 is turned through a complete revolution and the lunger 68 is caused to move horiiiy the portion 67 of cam 67, thereby accomplishing the necessary shifting of the clutch member 70, Fig. 14, to effect its engagement with the clutch gear 51, whereupon the forward movement of the blank carrier. is effected by-the transmission of power at. suitable speed from shaft 42 throughfpinion's M and 46, gear wheels 50 and 51, gears 52 and 53, to shaft 54, to the pinion 41 and worm 60..

Aftcr this operation has progressed for a giventime, the continued forward movement of the shaft 66 brings the adjustable collar 71 into engagement with the bifurcated arm 72, to which is attaehed'plunger 73, the rear end of which has been held in position in engagement with the walls of notch 87 in plunger 68 by means of spring 88. When the plunger 6 8 is released by the Withdrawal of rod 73, it is forced forward by means of spring 89 to throw clutch member 7 0 into engagement with gear 47, whereupon the shaft 1-9 through pinion 47 is given a reverse rotation, which imparts to the blank carrier 3 through gears52, 53, 41 and 60a quick reverse or backward movement,

At the end of the return movement of shaft 66, the clutch element 65,-. which is "rotating sleeve element 65., and. thus the' shaftfifi, to therwvith the ca11 1-67 ,is caused to'rotnte. am 67 threws' renrwnrd", lunger 68', which, in turn; through woted ever 69 disenguges felutclilrnember 'i' .5 thronis it into a neutral position between the clutch mem 1 here on zearstf andtl. While in this posi- =-;tion-the"gear wheel 7518f to rotate onesixth of alturn by means of the mechanism heretofore described rind illustrated-in F i'gs. 8,-9,-'11,-29nnl' 30.,

i cerrier, 3, -I ig22,T-. which may be obviously made a metallic; "forwnrd backwnrd and sidewise if so de- It'is essential hat theblenk carrier shoulii have a longitudinal movement along absolutely determined lines, end 'thet for such movement it shall be positirely held and guided; E'or this pnrpo's'e, I provide on the rejections or ides 90 sired, and these stops register withguide ays 91 'on :1. stationary art of the machine. L When by the means a ho I blank carrier is turned a proximately to the -prope r extent, ench e 90 engages with the walls vof the adjacent guideliva 91 and deterxnhies.'with' great accurate? 0.

've described the te exact iositi'on-nr indexing ofthe' nk 'oarrier w in-its-moeen ent toward the cutters.

--By '.t-l 1e:Qperntion's.t I 1ddevicesthus far lelscribed, the blank stock has been. inter:

" l nittently :fetl i-nto'the. niachine and cut off {in sectibns" Thesesections have been successive-1y introduced into the chuclts of the blankcarrier, intermittently reciprocated 'hncl'revol'ved to present them to the several tcolsfiwhich cut the grooves and perform the. other ,opemtions which they may require.

Aftrthe blanks have thus been successively presented-to all the working or tool stationsi they ureejeetec'l from the chucks and droype into a suitable-receptacle es finished pieces. The mechanism. for efllectin the operation of-igrippin and electing the ianks or, drills from the c ucks will nowbe described.

At'the properints on the blank carrier there-'aremonnte tubular-members 92, F1

1 24Jbnpableoflrotatien, but not or indepen "fel'it' lengitndinal movement. With-m these member-share -tlihes-92 ca 1 -rying at their forw re. encis the pellets 36 and retained in position by nuts J3 git. their rear ends. On:

(ili'cli-of-seid" tujhnhtr. members 92, near the 'rm lf-o'f theszunc. is secured-by rnenns of, ins

not shown; a. tubular cnsingilLQn-ithin w ich iirryinir at its inner foinyne'ii engl 99* is acted upon by :1 spring pll'mger 125- lw-hich serves to hold lintll arms in llhl'lnlll .msition a,.zainst. a euituhlc stop.

When the blank eurrlcr'is moved forward; as :for example, to cause one of the chucks toreceive a blank cut from "the "stock. the arms 99' and 9.9" engage the shell 96, tending to press it "backward "over the tubular casing 94 and bring the cam surfaces 97 uverllle ends of the -nm levers 95. Bj'this means the ends of the latter are cnu'sed tc'eriga e the nuts 93, which are screwed to the tune 92 and force back the latter u. short-distance,

- This'd'rawethe collet 36' into its cns'ing'nml gri the blank which has entered it."

n order to insn're the proper action of the cam ievers 9,5 in thus locking the' chuck, the rod 18 carries a'spir-nl spring 100, Fig. 10, which engages-n sleeve 101 loose. on said rod. When the lilnnk'ciirrier advances. a stop ring 108 compresses this springby engagement with '11 sprin controlled pawl 103 pivoted en'the sleeie 101. Normally the lion d of thepnwl 1 03 lies in the path of the stop ring 108, aiid by the a civance of the latter; the pawl is io'rcedinto engagement with an :adjustahle fixed'stop 105.- 'vhich"tm"ns it and causes it to slip 'from'said ring 108, releasing the spring 100 and causing the sleeve 10110 strike shoulder, or proi'ection' 106. sleeve, being capable of ongi'tudinnl move ment with the shaft 98, the sudden release of the springa acting upon it, imparts an impact that fives the leversfili) and 99 against the shell'96- and insures the proper engagement of the vcnln levers with the cam surfaces 97. I

In its movement toward the ejecting step 111, the shell96, as shown in Fig. 6,;is 0ngngedz'hy two pivoted spring actuated arms 112 barried by the fixed support 112"f0r the ejectii'igstop 111. and by means of such arms is forced. forward, whereby the trains or pro jeotions 97. Fig. 10, are 'cnrriecl away-from the ends of the levers 9,5 relcasing'the iutter and thereh loosening the finisher} blank in the collet'f 6'. Within the tube is'a spring actuated sliding rod, 109, the re -r end of which projects through the nut- 9; and the forward and of which pnojccfs into the chuck 36 in theform of a pin'110.

'ward-Iimit.nf trnvel of the rori 109 its end comes. into engagement with said pivoted ejcctori'stop 111} [which throws the-f nd 109 Near the hack for viir'gl imdeje cts' the finished hlnnk or ih'ill .fromthe noilct 36".

' Tt will be borne in mind that fllm iilnnk kaarr'ior'ilnesnot rl-rolyi i'rjr ti lit is nearly or qiiihat its extremeirurposition, Tn operanot, Hiercfnm; While the ch n-[6'nphthin-ing' -the finished drill will be operated. and its 

